Planners and engineers, not a pitch team
The people who scope your study are the people who run the analysis and sign the report. No handoff, no junior bench learning on your budget.
Transportation engineering and planning
Every crash, delay and detour was measurable before it happened.
LSC Nexus studies how intersections, corridors and networks actually perform, then plans, analyses and designs the changes that make them safer and more reliable, for people walking, cycling, riding transit, driving and moving freight.
Intersection study
Illustrative
- Control delay
- 41.6s/veh
- Conflict points
- 32
- Peak-hour LOS
- D
A worked example, not a past project. Conflict-point counts are the standard figures for a four-leg intersection and a single-lane roundabout.
The firm
Nobody sets out to build a dangerous intersection. They get built anyway, one reasonable decision at a time.
The counts, crash records, signal timings, speed data and public complaints that would have caught it are usually already sitting in an agency's files. Our work is to read them together, model what changes, and hand back a recommendation that survives review, council and the public meeting.
Built for public work
We write to the methods your reviewers expect and hand over the data, models and assumptions, so a finding can be checked rather than taken on trust.
Engineering under licensure
Planning, analysis and study work is delivered by our own staff. Work that constitutes the practice of engineering is performed under the responsible charge of a licensed Professional Engineer, in house or through our teaming partners.
A technology practice inside a transportation firm
Modelling, GIS, dashboards and applied AI are run in house rather than subcontracted, which is why our studies tend to leave a working tool behind them.
Practice areas
Six ways we're asked in.
Most engagements combine two or three of them. The full service list is below.
Transportation planning
Corridor and small-area studies, multimodal and long-range plans, transit and active transportation planning, comprehensive plan amendments, parking and access management.
- Corridor studies
- CPA studies
- Multimodal plans
Traffic engineering & operations
Traffic impact analysis, capacity and level-of-service, signal warrants and timing, turn lane warrants, queuing and speed studies, and the exception requests that go with them.
- Impact analysis
- Capacity & LOS
- Signal warrants
Safety & human factors
Crash diagnosis and countermeasure selection, road safety audits, Safe System and Vision Zero action plans, plus the ergonomics side: sight lines, sign legibility, driver expectancy and wayfinding.
- Crash analysis
- Safety audits
- Human factors
Roadway & traffic design
Signal design, signing and pavement marking, geometric layout of intersections and roads, roundabouts, traffic calming, bicycle and pedestrian facilities, and accessible design.
- Signals
- Roundabouts
- Signing & marking
ITS & smart mobility
Concepts of operations, signal system and TSMO support, detection and field data, connected and automated vehicle readiness, and keeping deployed systems reporting once the ribbon is cut.
- ITS ConOps
- Signal systems
- TSMO
Modelling, data & digital delivery
Travel demand modelling and microsimulation, GIS and spatial analysis, count and probe data programmes, dashboards and public-facing map tools, applied AI for detection and forecasting.
- Simulation
- GIS
- Dashboards
Adjacent practice
Freight, logistics & supply chain
Freight is one mode among several, and it is where a transportation network meets a business. We plan truck routes and freight corridors, and we take on standalone supply chain work: network and route design, warehouse and inventory flow, carrier and vendor evaluation, and 3PL/4PL coordination for organisations without an in-house logistics function.
- Freight planning
- Truck routing
- Network design
- 3PL/4PL
Studies, planning, analysis and modelling are delivered by LSC Nexus staff. Deliverables that constitute the practice of engineering, including sealed drawings, are prepared under the responsible charge of a licensed Professional Engineer, in house or through our teaming partners. We will say which arrangement applies before a scope is signed.
Services
The full list, in the language of your scope of work.
If a line item in your solicitation isn't here, ask. It is usually a naming difference rather than a capability gap.
Diagnosis & data
- Turning movement and classification counts
- Speed and travel time studies
- Origin-destination and probe data analysis
- Queuing and delay studies
- Sight distance evaluation
- Crash data analysis and diagnosis
- Data collection programme design
- Performance measurement and monitoring
- GIS and spatial analysis
Safety & human factors
- Road safety audits
- Systemic safety analysis
- High-injury network screening
- Countermeasure selection and CMF application
- Safety action plans (Safe System, Vision Zero)
- Pedestrian crossing studies
- School zone and Safe Routes to School studies
- Work zone safety review
- Transportation ergonomics and human factors review
- Sign legibility and driver expectancy
- Wayfinding and traveller information design
Operations & capacity
- Traffic microsimulation
- Capacity and level-of-service analysis
- Signal timing and coordination
- Traffic signal warrant studies
- Turn lane warrant analysis
- Traffic impact analysis
- Traffic signal system operations and TSMO
- Parking studies
- Access management exception requests
Planning & policy
- Corridor studies
- Travel demand modelling
- Multimodal and long-range transportation plans
- Comprehensive plan amendment (CPA) studies
- Transit planning and route analysis
- Bicycle and pedestrian plans
- Complete streets planning
- Freight and truck route planning
- Access management plans
- Site access and circulation planning
- Transportation demand management
Design
- Geometric layout of intersections and roads
- Roundabout design
- Traffic calming design
- Traffic signal design
- Signing and pavement marking plans
- Bicycle facility design
- Pedestrian facilities, accessibility and PROWAG
- Maintenance of traffic and work zone plans
- Engineering drafting and CAD production
- Plan review
Systems, digital & support
- ITS concept of operations and deployment support
- Detection, sensors and field data integration
- Connected and automated vehicle readiness
- Dashboards and reporting tools
- Custom web applications and agency portals
- Public-facing project and map sites
- Applied AI for detection and forecasting
- Grant and funding application support
- Project management
- Training and knowledge transfer
How we work
Four stages, usually in this order.
Sequence matters. We don't analyse before we can see the ground truth, and we don't leave before your staff can rerun what we built.
Stage 1
Define
One working session to state the question as a decision: which intersection, which corridor, which policy, and what has to hold up when it's challenged. You get a written scope with a fixed fee.
1-2 weeks
Stage 2
Observe
Counts, crash records, speeds, signal timing, probe data and a site visit. Where the data doesn't exist, we collect it. Most studies are only as good as this stage, so it comes before any promise.
2-4 weeks
Stage 3
Analyse
Operations, safety and modelling work run in the methods your reviewer expects, with the alternatives compared on the same basis rather than the preferred one written up alone.
3-8 weeks
Stage 4
Recommend
Report, exhibits and drawings for review, council or public comment, with the data, models and assumptions handed over so your team can rerun them next year without calling us.
Ongoing, optional
Contact
Tell us what you need.
We'll reply within two business days with either a straight answer or questions that decide the scope.
- contact@lscnexus.com
- Location
- Virginia, United States
- Engagement
- Prime or subconsultant on public procurements
- Availability
- Remote across the US; on-site in the DC-Maryland-Virginia region